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Queen Elizabeth and her family marked the monarch's official 90th birthday with a parade, a colorful military ceremony and an appearance at Buckingham Palace in London, United Kingdom, on Saturday. (Published Saturday, June 11, 2016)

Queen Elizabeth II and her family are marking her official 90th birthday with a parade, a colorful military ceremony and an appearance on the Buckingham Palace balcony.

The queen and her husband, Prince Philip, will join the Trooping the Color parade, traveling by vintage carriage. Other senior royals are also expected to travel by carriage along the parade route.

Many observers expect 1-year-old Princess Charlotte to make her first balcony appearance with her parents, Prince William and his wife Kate.

The festivities continue Sunday with a massive street party in front of the palace. The palace has invited roughly 10,000 people who work at charities supported by the queen to the open air festivities.